The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2017
Filed:
Dec. 31, 2015
Abb Technology Ltd., Zurich, CH;
Li Qi, Cary, NC (US);
Xianyong Feng, Cary, NC (US);
ABB Schweiz AG, Baden, CH;
Abstract
Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system comprising at least one DC power distribution network and at least two protective devices operatively coupled to the DC power distribution network. Each protective device is structured to sense one or more electrical characteristics associated with the DC power distribution network and to controllably interrupt current through the DC power distribution line. A control system is structured to determine the location of a high impedance fault between two of the protective devices using one or more electrical characteristics sensed by the two protective devices to calculate the inductance and resistance of the portion of the DC power distribution line between one of the protective devices and the high impedance fault.